/*
 * Copyright (c) 2007, 2015, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/*
 * Copyright 1999-2002,2004 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.sun.org.apache.xerces.internal.dom;

/**
 * Internal class LCount is used to track the number of
 * listeners registered for a given event name, as an entry
 * in a global hashtable. This should allow us to avoid generating,
 * or discard, events for which no listeners are registered.
 *
 * **** There should undoubtedly be methods here to manipulate
 * this table. At the moment that code's residing in NodeImpl.
 * Move it when we have a chance to do so. Sorry; we were
 * rushed.
 *
 * ???? CONCERN: Hashtables are known to be "overserialized" in
 * current versions of Java. That may impact performance.
 *
 * ???? CONCERN: The hashtable should probably be a per-document object.
 * Finer granularity would be even better, but would cost more cycles to
 * resolve and might not save enough event traffic to be worth the investment.
 */

/**
 * @xerces.internal
 *
 */

class LCount {

  static java.util.Hashtable lCounts = new java.util.Hashtable();
  public int captures = 0, bubbles = 0, defaults, total = 0;

  static LCount lookup(String evtName) {
    LCount lc = (LCount) lCounts.get(evtName);
    if (lc == null) {
      lCounts.put(evtName, (lc = new LCount()));
    }
    return lc;
  }
} // class LCount
